DOI: 10.1016/j.atmosres.2018.08.007
Scopus记录号: 2-s2.0-85052535847
论文题名: The remote responses of early summer cold vortex precipitation in northeastern China compared with the previous sea surface temperatures
作者: Fang Y.-H. ; Chen K.-Q. ; Chen H.-S. ; Xu S.-Q. ; Geng X. ; Li T.-Y. ; Teng F.-D. ; Zhou X.-Y. ; Wang Y.-G.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214 起始页码: 399
结束页码: 409
语种: 英语
英文关键词: Early summer northeast cold vortex precipitation
; Kuroshio SST
; Lake Baikal's blocking high
; Model sensitivity tests
; NEC
; North Atlantic SST tripole
; Sea of Okhotsk's blocking high
; Ural Mountains’ blocking high
Scopus关键词: Atmospheric temperature
; Climatology
; Lakes
; Ocean currents
; Statistical methods
; Submarine geophysics
; Surface properties
; Velocity
; Kuroshio
; Lake Baikal
; Model sensitivity
; North Atlantic
; Sea of Okhotsk
; Vortex flow
; atmospheric blocking
; atmospheric circulation
; comparative study
; model test
; precipitation (climatology)
; sea surface temperature
; sensitivity analysis
; summer
; vortex
; China
; Kuroshio Current
; Lake Baikal
; Pacific Ocean
; Russian Federation
; Sea of Okhotsk
; Urals
英文摘要: Based on the daily precipitation data of Northeastern China (NEC), this research study utilized the monthly mean geopotential height field and vertical velocity field data obtained by NCEP/NCAR reanalysis. In addition, the monthly mean SST (sea surface temperature) data obtained by NOAA reconstruction, along with the calculations of NEC precipitation generated on the occurrence date of the annual early summer (June) northeast cold vortex (NECV) (hereinafter referred to as the cold vortex precipitation) were used to analyze the variation characteristics of cold vortex precipitation. The aim of this study was to explain the physical mechanism of the previous SST factors which had influenced the cold vortex precipitation through the force of atmospheric circulations, from the perspective of a statistical analysis. Finally, sensitivity tests of the AM2.1 atmospheric circulation model were conducted to verify the statistical analysis results. The results revealed that since 1961 there had been a significant increase trend in the early summer cold vortex precipitation. The relationships between the NEC early summer cold vortex precipitation and the previous SST were divided into three periods. During the period ranging from 1961 to 1979 (hereinafter referred to as Phase 1), a NAT anomaly positive phase during March to May resulted in the blocking highs of the Ural Mountains and the Sea of Okhotsk becoming strengthened (“dual blocking pattern”) in the early summer, which in turn led to increased early summer cold vortex precipitation. During the period ranging from 1980 to 2000 (hereinafter referred to as Phase 2), a higher Kuroshio SST in April to May stimulated an EU-like teleconnection pattern in the early summer over Eastern Asia. As a result, the cold vortex precipitation in early summer was reduced. After 2001 (hereinafter referred to as Phase 3), the NAT anomaly negative phase during March to May induced strengthened blocking patterns on the northwestern side of Lake Baikal in the early summer, which was accompanied by a strengthened northeastern cold vortex (a pattern of “higher in the north, lower in the south”). Also, an upward vertical velocity anomaly appeared over the NEC, which resulted in increased early summer cold vortex precipitation. The sensitivity tests of this study's numerical model reproduced the force effects of the Kuroshio SST in Phase 2, and the NAT in Phase 3 on the EU-like teleconnection pattern, and the pattern of “higher in the north, lower in the south”. These findings further corroborated the aforementioned results. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108748
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster, Ministry of Education/ International Joint Research Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Regional Climate Center of Shenyang, Shenyang, 110016, China; School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, 210044, China; College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Jilin provincial Climate Center, Changchun, 130062, China; Shenyang Central Meteorological Observatory, Shenyang, 110016, China; National Climate Center, China Meteorological Administration, Beijing, 100081, China
Recommended Citation:
Fang Y.-H.,Chen K.-Q.,Chen H.-S.,et al. The remote responses of early summer cold vortex precipitation in northeastern China compared with the previous sea surface temperatures[J]. Atmospheric Research,2018-01-01,214